400 ISL Transmission fluid in Coolant?
Hi, We have a 04 Dynasty with a 400 ISL, side radiator and 6 speed transmission, just passed 48k miles. Had the unit in for service and pink fluid was discovered in coolant tank which was transmis...
Forum Discussion
Not sure it this applies so correct me if I'm incorrect.
When going down the road I suspect the transmission oil pressure is probably higher than the engine coolant when everything is up to normal operating temps and pressures. But once parked the water is still hot and at pressure until it cools while the transmission is not. If there is a leak wouldn't you also have coolant in the transmission?
If I'm right there are a couple of ways to check.
1. Send a sample of the transmission oil out for testing. Even if you can't see coolant a lab will detect the various chemicals.
2. Drain the transmission into a clean container and check for coolant.
3.You could also do a pressure test of the transmission side of the radiator.
When going down the road I suspect the transmission oil pressure is probably higher than the engine coolant when everything is up to normal operating temps and pressures. But once parked the water is still hot and at pressure until it cools while the transmission is not. If there is a leak wouldn't you also have coolant in the transmission?
If I'm right there are a couple of ways to check.
1. Send a sample of the transmission oil out for testing. Even if you can't see coolant a lab will detect the various chemicals.
2. Drain the transmission into a clean container and check for coolant.
3.You could also do a pressure test of the transmission side of the radiator.
